فهرست مطالب kaveh akhtari

The present study was conducted in order to evaluate the effects of bilateral uterine artery ligation (BUAL) on the ovarian follicular fate, and alterations in carbohydrate, lipid, lipase and serum levels of F9SH, LH, prolactin, estrogen and progesterone. Twenty-four mature female rabbits divided into two test and control-sham groups. The animals underwent ovariohystrectomy on days 23, 43 and 63 after BUAL. Later serum and tissue samples were processed for histological and biochemical analyses. Two-way ANOVA test was used for statistical analyses and p<0.05 was considered as significant. The ovaries from the case groups exhibited markedly increased atretic follicles, which were characterized by early antrum formation, ooplasmic vacoulation, granulosa cells dissociation and oocyte deformation. Lipid foci were remarkably present in the cytoplasm of oocytes, granulosa and theca cells in BUAL rabbits. Smaller sized atretic follicles showed higher lipid reactions than large ones. The PAS reaction was highly positive in zona pellucida (ZP), basement membrane, granulosa cells and follicular fluid of atretic follicles. Early atresiated follicles showed remarkable reaction sites for lipase. Significant (p<0.05) increase in serum levels of FSH, LH, progesterone, and prolactin was revealed in BUAL rabbits compared to the control group while serum levels of estrogen decreased time-dependently in the test groups. The current study suggests the critical role of the uterine artery in controlling ovulation and follicular growth. Moreover atresia processes might relate to lipid accumulation in the cells along with attenuation of lipase activity.

Nowadays it is proofed that the uterine artery plays essential role in follicular growth and/or post parturition hemorrhagic.

This study was conducted to evaluate the effect of Bilateral Uterine Artery Ligation (BUAL) on follicular fate and the probable histochemical changes of the carbohydrate and lipids in the ovaries of rabbits.

24 mature female rabbits randomized into two test and control-sham groups. Test group subdivided to three groups based on time. Animals in the test group under went to BUAL. The ovaries were processed to histochemical and histomorphometric analyses to evaluate the ratio of lipid carbohydrate and lipase enzyme in follicular cells.

The ovaries from test groups exhibited many atretic follicles in various sizes. BUAL significantly (p≤0.05) increased the rate of atresia in the test groups in comparison to the control-sham cases. This situation was progressed by the time. In the test groups lipid reactions were observed more remarkable in the small atretic follicles in comparison to the large atretic follicles. BUAL elevated the reaction sites for lipase enzyme in the early stages of the atresia in the test group.

Referring to our results BUAL caused significant (p≤0.05) hypo-ovulation by increasing the atresia. Also increasing lipid foci in the first stages of the apoptotic process caused cytoplasmic lipase enzyme evaluation while the lipase enzyme level was decreased by the advancement of the atresia and decreasing of the biological activities in follicular cells.